I have several C64 and VIC-20 computers nut only one working PSU. These PSU's seem to get faulty after so many years. They even can ruin your computer. So I searched the internet for a decent replacement. A C128 PSU is a good choice because it can handle more Watts than a C64 PSU while having the same output voltage. Of course it needs a different connector.The one I could buy is a black PSU for a C128 I never saw before: